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3 years ago

13

A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1". KOH + Cu(NO3)2 → KNO

3 + Cu(OH)2

1 answer:

svet-max [94.6K]3 years ago

5 0

2KOH + Cu(NO3)2 → 2KNO3 + Cu(OH)2

2K⁺ 1Cu²⁺ 2K⁺ 1Cu²⁺

2OH ⁻ 2NO3⁻ 2NO3⁻ 2OH⁻

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8 0

3 years ago

PLEASE HELP ME ASAPPPPP What is the density of a piece of cardboard that has a mass of 250 g and volume of 46 mL? *

Roman55 [17]

Answer:

The answer is

<h2>5.43 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 250 g

volume = 46 mL

The density is

$density = \frac{250}{46} \\ = 5.4347826...$

We have the final answer as

<h3>5.43 g/mL</h3>

Hope this helps you

6 0

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